Dandelions, Taraxacum officinale, are plants that asexually produce fruitlike propagules. Sexual reproduction is very rare in this organism. Which species concept would be LEAST useful in defining dandelions as a species?
A. Ecological species concept.
B. Biological species concept.
C. Both the evolutionary and ecological species concepts.
D. Evolutionary species concept.
E. Phylogenetic species concept.
Answer: B
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The first catalytic and self-replication biological molecule was most likely
A) RNA. B) DNA. C) proteins. D) ATP.
Which of the following statements concerning the relationship of energy expenditure to body size in animals is TRUE?
A. Large endotherms have higher mass-specific metabolic rates (O2/g tissue/hour) than small endotherms. B. Large ectotherms have lower mass-specific metabolic rates than small ectotherms. C. There is an inverse (i.e., negative) relationship between the TOTAL energy used by an animal and its body size. D. Only endotherms show an inverse relationship between specific metabolic rate and body size. E. Only ectotherms show an inverse relationship between specific metabolic rate and body size.
When a seed germinates, the embryo emerges from its dormancy and begins which phase of the plant life cycle?
A. monocot generation B. dicot generation C. sporophyte generation D. alternate generation E. gametophyte generation
In cell division, the separation of the cell's cytoplasm to produce two daughter cells is ________
Fill in the blank(s) with correct word